/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraComponent.h
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=Niagara, Meta=(DisplayName="Set Niagara Variable (Material)", Keywords="user parameter variable material")) void SetVariableMaterial ( [FName](API\Runtime\Core\UObject\FName) InVariableName, [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * Object )